Improvement in devices to prevent reverse motion in belts of sewing-machines



M. B; WHEATON.

Improvement in Devices to Prevent Reverse Motion in Belts ofSewing-Machines.

Patented Sep.3,1872.

- min/'4 Z cidmi a ave/W3 m whiff Md J UNITED STATES PATENT OFFICE.

MILES B. WHEATON, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF HIS RIGHT TOTHEODORE M. ELY, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN DEVICES TO PREVENT REVERSE MOTION IN BELTS 0FSEWING-MACHINES.

Specification forming part of Letters Patent Nol31,0 10, dated September3, 1872; antedated August 31,

Specification describing a Contrivance to Prevent Reverse Motion of aDriving-Belt in Treadles, invented by lVIILES B. WHEATON, of the city ofNew York.

To the under side of the table top on which a sewing-machine is secured,at or near the aperture through which the main belt passes, the smallframe A, shown in Figure l in the accompanying drawing, is secured bythe parts I Z, being screwed or riveted thereto. In the frame A theplate X is suspended on the rod W, the rod passing through the lugs Vand through the sides of the frame A, near the back edge thereof, thusproviding for an oscillatory movement in the plate X. The front edge ofthe oscillating plate X passes too near the back edge of the front bar yin the frame I Athat the thinnest belt in use on sewing-machines cannotpass between the edges when they are parallel the one with the other, so

that when a downward pull is given to a belt that is passed between itis clamped fast by the two edges, at the same time presenting noimpediment to an upward motion of the belt. The plate X is suspended onthe lugs V, as shown in the fiat and edge view in Fig. 2, that there maybe a forward movement in the front edgeof the plate X as it rises,keeping it close to the belt, yet insure the instantaneous clutch of thebelt upon the least attempt at reverse Attest:

W. M. GOODING, EDWARD GoLEVER.

